eHarmony ran a major survey to figure out what styles of humor are most attractive to the opposite sex. And it's pretty simple: Men are better off with dry, sarcastic senses of humor . . . and women are better off making fart jokes.

The study found that men are 7% more attractive when they're sarcastic . . . 16% more attractive when they're dry . . . and 6% more attractive when they're ironic.

For women, JUVENILE humor added 7% attractiveness . . . sarcasm added 14% . . . geekiness added 5% . . . and being dirty and raw added 4%.

Now, as for what kinds of jokes make people UNATTRACTIVE . . .

For men, dark humor makes you 14% less attractive . . . being dirty and raw knocks you down 9% . . . and practical jokes also knock you down 9%.

For women, POLITICAL humor makes you 12% less attractive . . . practical jokes make you 9% less . . . and being ironic knocks you down 4%.